Proper use of the correct tool and not using ball end tools on overly tight fasteners will fix 95% of stripped fastener issues.
I deal with a lot of bikes on poor condition at a local co-op. Stripping the drive feature in fasteners is very rare for me.
Don’t use an open end when you can use a closed end or socket. Don’t use an adjustable (crescent) wrench for anything that involves more than moderate torque for the fastener size. Keep your tools fully and squarely seated.
A little lubrication goes a long way.